Milgravis, Mikus, Krastins, Ivars ORCID: 0000-0002-3152-4128 , Kaldre, Imants, Kalvans, Matiss, Bojarevics, Andris and Beinerts, Toms (2023) Pulsed and static magnetic field influence on metallic alloys during solidification. Crystals, 13 (2):259. ISSN 2073-4352 (Online) (doi:https://doi.org/10.3390/cryst13020259)

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Abstract

Electromagnetic methods can be used to affect the solidification of metallic alloys. Combined alternating and static (DC) magnetic fields can induce pressure waves in liquid metals in a contactless manner, refining grain structure, preventing component segregation, and dispersing added particles. Here, the possibility of using a pulsed magnetic field in combination with a DC magnetic field to improve the solidification structure of metals is investigated. This enables achieving higher pressure amplitude and liquid movement within the whole crucible volume at the same power consumption. This can be a prospective way to achieve a fine-grained and a more homogeneous microstructure of metallic alloys as well as disperse added particles. In this work, analytical description of the phenomena and numerical modeling of the pressure amplitude and melt motion has been performed. A series of experiments have been carried out to demonstrate the effect of such interaction on the solidified metal microstructure. It is found that a combination of pulsed and DC magnetic fields creates strong compression and expansion of the liquid metal. Metals solidified under such interaction exhibit finer grain structure in Sn-Pb alloy and improved TiB2 particle distribution in 6061 aluminum alloy.

Item Type:	Article
Uncontrolled Keywords:	pulsed magnetic field, metallic alloys, metal solidification
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TP Chemical technology
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > School of Computing & Mathematical Sciences (CMS)
Related URLs:	Organisation
Last Modified:	13 Nov 2024 16:56
URI:	http://gala.gre.ac.uk/id/eprint/48600

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